Lubricator.



s'rarrns PATENT OFFICE,

LUBRlCTOFi..

Specification of Letters Patent.

Patented April 10, 1906.

Application filed Septemberl, 1905. Serial lio. 279,087.

' To all whom t may concern:

i Be it known that I, GEORGE S'LOAN, a citizen of the Unlted States, and a resident of North Yakima, in the county of Yakima and p langer.

The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claim.

A practical embodiment of the invention is represented in the accompanying drawings,-

forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 1s a sectional side elevation of the improvement. Fig. 2 is an inverted sectional plan view of the same on the line 2 2 of Fig. 1, and Fig. 3 is a perspective view of the device for ralsing and holding theplunger against the tension of itsspring.

The vessel A for containing the grease or other lubricant is provided in its bottom with a feed-passage A', leading to the passage B in the art B to l:be lubricated, and t e amount o lubricant passing through said feed-passage*` A is regulated vby a suitable valve C, preferably in the form of a screwvalvehavlng an aperture adapted to fully or partly re lster with the passage A. Within the vesse A is mounted a plunger, D, having its plunger-rod D extending through a recessed portion A2 of a cap A3, screwing on the upper end of the vessel A with a view to close the same.

A spring E is coiled around the plunger D i and rests with one end on the tophof the plunf ger D, while the other end of the said spring abuts againstf'the upper end wall of the eX- tension A2. By the arrangement 'described an exceedin ly long. and

powerful spring can the bottom thereof to cause a completedischarge fall/the lubricant contained in the vessel A to the part to be lubricated by way of the feed-passage A. B the useA of a powerful spring, as describe lubricant can be successfully forced to distant parts by the use of tubes and to points not readily accessible while the machinery is in motion.

In order to prevent leakage of the lubricant past the plunger D into the upper end of the vessel A, a packing-ring F is provided, preferably made of leather and fitted on the under side -of the plunger D. This packing-V ring F is engaged on its inner wall by an annular offset or shoulder G of an expansion disk G, made in sections, as plainly illus trated in Fig. 2, each section being held by a screw H to the plunger D, the screw passing through an elongated slot G2 in the respective section to -allow the same to slide outward with a View of expanding the ring F-that is, to move the peripheral face thereof into firm contact with the inner wall of the vessel A. 4In order to move the sections of the disk G simultaneously outward with a view of expandin the packing-V ring F, a screw I is rovide screwin@ in the plunger D and its p unger-rod D, and on said screw I- is formed a conical head I, engaging a countersink at the middle of the disk G, so that when the screw I is screwed upward in the plunger D and its plunger-rod D then the head 'I forces the sections of the diskG outward, thereby expanding the ring F.

From the foregoing it will be seen that all wear on the ring F can be readily taken up from time to time by screwing up the screw I, and as the-said ring is held in firm contact with the ,inner surface of the vessel A it is evident that all leakage of lubricant past the said plunger is entirely revented'nud all thelubricant in the vesse d) is forced to the part to be lubricated by the action of the spring E pressing the plunger D downward.

When it 's desired to refill the vessel A with lubricant, it is necessary to move the plunger D u Ward into an uppermost position and to t en unscrew the cap A3 from the vessel A to allow of refilling the same. In

,order to conveniently move the plunger D upwardly .against the' tension of its spring E, a

threaded end D2 of the plunger-rod D outside of the extension A2. The nutJ is'pro" videdwith suitable handles adapted to be taken'hold of`by the operator for convenientl turning the` nut on the threaded por-v tion 2 atthe time the lower side of the nutJ IOO 195 r Anut J Y'is provided, screwlng on the .upper y IIO rests on the upper end ol the extension A2. Thus when the screw is turned the plungerrod D', and with it the plunger D, is raised from a lowerinost position into an upperinost position in the vessel A. After the vessel A is filled and the cap A is replaced on the vessel A then the plunger D is released to allow the force of the spring E to move the plunger D downward against the lubricant with a view to force the saine out of the feed-passage A. In order to release the plunger D, the operator screws the nut J upward ay de- 1 sired distance on the upper threaded end of the plunger-rod D.. To preventthe nut'J from turning accidentally when in its upperi niostposition, a slide K is provided, pressed ,i on by a. spring L and i'iearing against the threaded end D2 of the plunger-rod, the said slide K being mounted to slide on the nut J, as plainly illustrated in Fig. It will be noticed frein an inspection of Fig. 3 that the nut J is provided with a raised portion y', having an undercut groove j arranged radially i to the plunger-rod, and the slide K is proi vided with a head for engaging the plungerrod and with a body portion /ritting the uni dercut groove, the spring li being arranged between the head of the slide and the raised g portion of the nut` In order to prevent the nut J from being completely unscrewed from the upper end of the plunger-rod D', a cap N is provided, secured to the outer terminal of the plunger-rod by a transverse pin N. (See Fig. l.)

Having thus described niy invention, I claim as new and desire to secure by Letters Patent- A lubricator comprising a vessel for containing a lubricant and provided with a feedpassage for the discharge of the lubricant from the vessel, a spring pressed` plunger provided with a' plunger-rod extending Wit' out the vessel, a handled nut screwing on-the said extended portion of the plunger-rod, said nut having a raised portion provided With a radial groove having undercut edges, a retainer having a head for engaging the plunger-rod, and a body portion fitting in the groove, and a spring between the head and the raised portion.

In testimony whereof I have signed in v name to this specification in the presence ol" two subscribing Witnesses.

y GEORGE SLOAN.V Witnesses C. E. FoRsYTH, AMIE L. Moon. 

